Vent-cap.



M. S. WRIGHT.

VENT CAP.

APPLICATlON FILED FEB. l5,1910. RENEWED MAR. 6, 19I6.

1,190,353. PmtentedJu1y11,1916.

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MORRIS S. WRIGHT, OF

WORCESTER, MASSACHUSETTS, ASSIGNOR TO M. S. WRIGHT C0,,

OF WORCESTER, MASSACHUSETTS, A. CORPORATION OF MASSACHUSETTS.

VENT-CAP.

, Specification of Letters Eatent.

Patented July 11,1916.

' Application filed February 15 1910, Serial No. 544,121. Renewed March 6, 1916. Serial No. 82,467.

To all whom it may concern:

Be it known that I, Mourns S. \VRIGHT, a citizenv of the United States, residing at Worcester, in the county of \Vorcester and 5 State of Massachusetts, have invented cer tain new and useful Improvements in Vent- Caps, tion, reference being had therein to the accompanying drawing.

The present invention relates to pneumatic musical instruments and has more particular reference to the venting featuresthereof.

In this class of pneumatic musical instruments, it is customary in various parts of the apparatus to have vent or bleed openings, and it is the primary object of the present invention to provide a cover or cap for such an opening with novel means for sup porting the same in position.

As customarily formed, the vent openings have been made directly in the wooden body part of the instrument, say the wind chest or pneumatics, and said openings have in some instances been covered by, a member, such as paper, secured to the outer wall of the said body part, the said member in turn having therethrough a pin hole or perforation constituting the vent opening proper. It is of course, desired that this vent or bleed opening, which is ordinarily the size of a pin hole, remain uniform in size and one of the objects of the present invention is to have the wall surrounding the opening of substantially rigid material, whereby the opening will maintain its size and shape, to this end includes what may be termed. a vent cap, preferably of metallic construction, and one of peculiar formation designed to be readily applicable to previously constructed instruments and one which may be removed and replaced as occasion demands. The invention also includes a cap having associated means whereby the same will be frictionally held in position, thereby doing away with any auxiliary securing means.

In the accompanying drawings, I have, for the purpose of illustration, shown the improved vent cap applied to the wall of a wind chest, though, of course, I desire it understood that it is within the contemplation of the invention to utilize the cap in connection with any part of the instrument where it is desirable to provide a bleed or similar opening.

of which the following is a specifica-.

and

In the drawings, Figure 1 is a sectional yiew of a portion of a wind chest with the improved vent cap applied, Fig. 2 is a plan v ew of one surface of the cap, Fig. 3 is a similar view of the reverse surface of the cap. Fig. 4 is a transverse sectional View of the vent cap applied.

Again referring to the drawings, wherein like reference characters refer to similar parts throughout the several views, A is a portion'of a wind chest broken away, and

having in one of its walls 1 an opening or openings 2 which are shown communicating with transverse openings 3. The said openings 2 are usually larger than is required to constitute the vent proper, and to restrict and govern the size thereof, suitable vent caps are provided. The said caps are conveniently of metallic construction, such as sheet metal, and comprise a dish-shaped portion 4 with a pin hole 4L therethrough, conveniently centrally thereof, for constituting the vent opening proper. Secured to the dish-shaped body portion 4: of the cap is a peripheral flange 5, which in the illustrated embodiment of the invention, is shown as annular in shape. As illustrated, the annular flange 5 is adapted to rest on the surface of the wind chest wall, while the dish-shaped body portion thereof, frictionally engages the interior wall of the openings proper, with the result that the vent cap is accurately positioned, firmly seated, and any additional securing means done away with.

It will be seen that the cap may be applied to previously constructed instruments having the usual openings-in the walls thereof, and it will also be appreciated that while ordinarily firmly held in position, the cap may be readily removed by overcoming the frictional resistance, and this feature constitutes an important part of the invention, since the cap may be quickly removed for cleansing purposes, or an entirely different cap with a different sized bleed opening, for instance, may be substituted according to the use.

I claim:

1.. A cap for the usual vent opening of a wind chest or the like in pneumatic musical instruments, comprising a relatively thin dish-shaped body portion with a relatively small bleed aperture and a peripheral flange, the dish-shaped portion of the cap being adapted to snugly and frictionally fit in the vent opening and the flange to rest against the surface of the Wind chest wall.

2. In a pneumatic musical instrument, a wind chest or the likehaving in one of its Walls a vent openingand a cap comprising ing struck up from. sheet metal and having 15 a central relatively small bleed aperture and a peripheral flange and said dish shaped portion of the ca being adapted .to snugly and frictionally t in the vent opening and the flange to rest against the surface of the 20 wind chest Wall. 7

In testimony whereof I aifix my signature in presence of two Witnesses.

MORRIS s. WRIGHT.

Witnesses:

HENRY P. MURRAY, 13. F. SAWYER.

(Gapies or this patent may be obtained for five cents each, by addressing the Oommluioner of Paton, Washington, D. G." 

